Double walled with inside made of heavy S.S. & outside of M.S.Sheet duly powder coated. The gap between the two walls is fitted with high grade glass wool to minimize thermal loss. Temp. range from ambient to 250ºc ± 2ºc is controlled by hydraulic capillary type thermostat. A variable speed stirring arrangement is fitted to the unit for maintaining temp. Plug to work on 220/230 volts A.C.Supply.